div {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:rgba(0,0,0);
}
div>a{
  position: relative;
}
a {
  display: inline-block;
  margin: 30px 20px;
  padding: 20px 40px;
  background: aquamarine;
  border-radius: 10px;
  text-align: center;
  text-decoration: none;
  color: #999999;
  font-size: 32px;
  font-weight: bold;
  text-shadow: 3px 5px 2px #ffffff;
}
a.active,
a:hover {
  background: peachpuff;
  color: #c8a7cc;
  transform: scale(1.2);
  text-shadow: -3px -5px 2px #ffffff;
}
